diff --git a/composer.json b/composer.json
index 760e27b..fb41225 100644
--- a/composer.json
+++ b/composer.json
@@ -17,7 +17,8 @@
   },
   "config": {
     "platform": {
-      "php": "7.2"
+      "php": "7.2",
+      "ext-sockets": "7.2.23"
     }
   },
   "autoload": {